within IBPSA.Airflow.Multizone.Types;
type densitySelection = enumeration(
    fromTop "Density from top port",
    fromBottom "Density from bottom port",
    actual "Actual density based on flow direction")
  "Enumeration to select density in medium column" annotation (
    Documentation(info="<html>
<p>
Enumeration to define the choice of valve flow coefficient
(to be selected via choices menu):
</p>
<table border=\"1\" summary=\"Explanation of the enumeration\">
<tr><th>Enumeration</th>
    <th>Description</th></tr>
<tr><td>fromTop</td>
    <td>
Use this setting to use the density from the volume that is connected
to the top port.
    </td></tr>
<tr><td>fromBottom</td>
    <td>
Use this setting to use the density from the volume that is connected
to the bottom port.
</td></tr>
<tr><td>actual</td>
    <td>Use this setting to use the density based on the actual flow direction.
</td></tr>
 </table>
</html>"));
